In a tweet, Sanders wrote that he will "apologize to no one" for supporting peaceful diplomatic efforts over armed conflict with Iran, citing U.S. wars in Iraq and Vietnam as examples of past U.S. armed responses that resulted in long-running and exhausting wars.

"I was right about Vietnam. I was right about Iraq. I will do everything in my power to prevent a war with Iran. I apologize to no one," the senator tweeted, along with a video explaining his stance against war with the country.

"Recently I've been criticized a bit because of my opposition to war," he says in the video. "So let me be very clear: I make no apologies to anybody that when I was a young man, before I was elected to anything, I opposed the war in Vietnam. And I know what that war did to my generation."

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"I'm going to do everything that I can to prevent a war with Iran, because if you think the war in Iraq was a disaster, my guess is that war in Iran would be even worse," he added.

The comments come as tensions rise between the U.S. and Iran, with the State Department pulling most U.S. personnel from Iraq amid reports that the Pentagon presented a plan to deploy 120,000 troops to the region, which Trump dismissed. The back-and-forth has prompted many to point to Iraq as a warning sign for consequences of war with Iran.

One tweet from the "Meet the Press" Twitter account declared that Sanders "said he won't apologize" for his anti-war efforts. The tweet was widely shared online, with Sanders supporters questioning why the senator would apologize for a stance they argue has been historically vindicated.

Meet the Press should apologize for its role in selling the lies that brought us the Iraq War. And for this.